Professor Keon Jae Lee created a solid-state flexible battery that retains is energy level when folded, spindled, and or mildly mutilated. The battery could mean the future e-readers and tablets could be paper-thin and partially foldable, encouraging new device designs.
These rechargeable lithium-ion batteries are actually printed on a thin-film. Applying battery material to rollable displays has been a big problem for the gadget manufacturers thus far but this breakthrough could change the way we think about surfaces, screens, and case materials.
As you can see from the video, the thin-film battery can be bent over and over again without reducing voltage output.